CN1501769A

CN1501769A - Noise absorber

Info

Publication number: CN1501769A
Application number: CNA200310115654A
Authority: CN
Inventors: 渡边雄悦; 之; 植村博之
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 1997-03-14
Filing date: 1998-03-13
Publication date: 2004-06-02
Anticipated expiration: 2018-03-13
Also published as: US6078241A; DE19811072A1; CN1147885C; JP3246599B2; CN1200011A; JPH10322079A; US5920250A; TW454436B; CN100338985C; HK1066686A1

Abstract

A noise absorber capable of preventing a cable from becoming damaged with a high degree of reliability while demonstrating outstanding noise absorbing characteristics is provided with a cover 1 and a pair of ferrites 21 and 22. The cover 1 is constituted through the combination of a first cover 11 and a second cover 12. The first cover 11 is provided with a ferrite storage portion 110 and a cable storage portion 111. The second cover 12 is provided with a ferrite storage portion 120 and a cable storage portion 121 . The ferrite storage portion 110 is formed at an internal surface of the first cover 11 and the ferrite storage portion 120 is formed at an internal surface of the second cover 12. The cable storage portion 111 is formed adjacent to the ferrite storage portion 110 at a side thereof, whereas the cable storage portion 121 is formed adjacent to the ferrite storage portion 120 at a side thereof. The pair of ferrites 21 and 22 are provided in the ferrite storage portions 110 and 120 at the first cover 11 and the second cover 12 respectively and are combined so as to form between them a cable passage constituted of indented grooves 211 and 222. The indented grooves 211 and 222 and the cable storage portions 111 and 121 constitute a continuous cable guide passage.

Description

Noise absorber

The application be that March 13, application number in 1998 are 98101107.1 the applying date, denomination of invention divides an application for the application for a patent for invention of " noise absorber ".

Technical field

The present invention relates to a kind of noise absorber, it can be installed on the cable such as personal computer, video game apparatus or like.

Background technology

This class noise absorber comprises that the wherein a pair of ferrite that forms cable through therebetween that assembles encapsulates with housing as examined the sort of disclosed in the utility model communique No.32718/1994 in Japan in prior art.

The user can with cable outside this class noise absorber around one the week or two weeks to improve electric property.But when using like this, cable will be exposed on the outer surface of housing and these expose portions of cable are damaged easily.The method of having taked with heat-shrink tube cable expose portion cover to be got up in prior art is as the measure that prevents that the cable expose portion from sustaining damage, and the heat-shrink tube back that is heated is shunk on expose portion expose portion is sealed, and shields.

But as when aerial lug being housed, aerial lug must be passed heat-shrink tube with heat-shrink tube encapsulating housing and cable expose portion at the cable two ends.So if the interior warp of heat-shrink tube less than the external diameter of aerial lug, heat-shrink tube just can't be installed.

The problems referred to above can be selected the internal diameter of heat-shrink tube and avoid greater than the external diameter of aerial lug.But the internal diameter of heat-shrink tube is more many greatly than the external diameter of cable expose portion in the noise absorber in this case, thereby the gap occurs between heat-shrink tube outer cover after the contraction and cable expose portion.This just caused heat-shrink tube can not with the noise absorber close installation, under extreme case, also can cause coming off of heat-shrink tube.

In addition, if when above-mentioned noise absorber is mounted on the computer cable that children use, children may pull down noise absorber from cable, and this can cause noise absorber to lose the absorption function of noise.And also the noise absorber of installing must be pulled down from cable sometimes.

Summary of the invention

An object of the present invention is to propose a kind of can be convenient and be installed in noise absorber on the cable rapidly.

Another object of the present invention is to propose a kind of noise absorber with outstanding noise absorption performance.

Another purpose of the present invention is to propose a kind of noise absorber that can not throw off because of children's behavior and cable.

For achieving the above object, noise absorber according to the present invention comprises housing and a pair of ferrite.Housing is made of first housing and second shell combination.First housing and second housing have respectively ferrite put the part and cable put part.Ferrite puts partially-formed inner surface in first housing and second housing.Cable puts part and is located at each ferrite and puts a side of part and put part near ferrite.Between it, formed cable through after placing first housing and the second housing ferrite to put a pair of ferrite combination partly.Cable through and cable put part and have constituted the continuous cable path of navigation.Ferrite puts the clamp that part has the described ferrite of being stuck in of outside protrusion end.First housing is connected to each other with hinge at one end margin place with second housing is in the same place, and is provided with fixture in the edge of the other end relative with the described edge of described this end.

As mentioned above, housing is made of first housing and second shell combination.First housing and second housing surface within it all have ferrite and put part.Between them, formed cable through after placing first housing and the second housing ferrite to put a pair of ferrite combination partly.Utilize this structure, place the cable of first housing, one side or second housing, one side to put the part place on cable and again first housing and second housing joint are sealed up, noise absorber can be contained on the cable easily.Even cable can not counteract with being connected such as electronic installations such as personal computer or video game apparatus yet, even harmless when being connected to connector yet.

First housing comprise be positioned at ferrite put part one side and near ferrite put the part cable put part.Cable through and cable put part and have constituted the continuous cable path of navigation.Cable can pass cable through in proper order along the cable guide path in this structure, and cable puts part and cable through.Just to pass ferritic structure different with cable, and cable passes the number of times that the length of cable through is twined corresponding to cable herein.The noise absorption characteristic is improved.

And being provided in a side of the inner surface of first housing and second shell because cable puts part, cable can twine in housing and put and can not be exposed to the outside of housing.

Noise absorber according to another embodiment of the present invention comprises housing and a pair of ferrite.Housing is made of first housing and second shell combination.First housing and second housing have ferrite respectively and put part.Ferrite puts partially-formed inner surface in first housing and second housing.Between it, formed cable through after placing first housing and the second housing ferrite to put a pair of ferrite combination partly.First housing is connected to each other with one or more hinges at one end margin place with second housing is in the same place, and is provided with fixture in the edge of the other end relative with the described edge of described this end.Fixture comprises first hole and hook.First hole comprises and inwardly protruding out and the rubber-like projection, and comprises the narrow that narrows down because of projection.Hook inserts in first hole by narrow, so that hook is stuck at the projection place.The external dimensions of the insertion portion of hook is set to the hole dimension greater than described narrow.

Housing is made of first housing and second shell combination.First housing and second housing have the ferrite that is located at first housing and second shell inner surface and put part.Between them, formed cable through after placing first housing and the second housing ferrite to put a pair of ferrite combination at part place.Utilize this structure, cable is placed the cable through of one of first housing or second housing, first housing and second housing are engaged seal up again, noise absorber can be contained on the cable easily.Even cable does not have obstruction with being connected such as electronic installations such as personal computer or video game apparatus yet, even harmless when being connected to connector yet.

In addition, first housing and second housing are connected with each other them at one end margin place by hinge, are provided with fixture at the other end margin place with this end opposite.So when being loaded on above-mentioned noise absorber on the cable, can utilizing hinge easily first housing to be connected to each other with second housing and be in the same place with fixture.

In addition, fixture comprises first hole and hook.In each first hole, be equipped with the projection that inwardly protrudes out.Hook inserts in first hole and is fixed by projection.First hole comprises the narrow that narrows down owing to projection, and the size in narrow hole is littler than the external dimensions of hook insert division.Projection has elasticity.

Like this when hook injects in first hole of fixture, even if the size in narrow hole less than the external dimensions of hook insertion portion, utilizes the elasticity of projection self to make the crooked just insertion portion of hook can being pressed in first hole of projection that hook is blocked by projection.

Because of projection has elasticity, be returned to the home position by the fixing back of projection projection at hook.Because the hole dimension of the first hole narrow is less than the external dimensions of hook insertion portion, in case projection is returned to its home position, hook just can be with the projection disengagement or by deviating from first hole.So just can not hook be thrown off with projection.

Description of drawings

Consult the accompanying drawing that only provides in indefiniteness example mode, the those skilled in the art in present technique field can both understand the present invention above-mentioned with other advantage, characteristics and purpose, accompanying drawing comprises:

Fig. 1 is the exploded perspective view according to noise absorber of the present invention;

Fig. 2 is the stereogram of noise absorber assembled state shown in Figure 1;

Fig. 3 is the plane graph of Fig. 1, noise absorber shown in Figure 2;

Fig. 4 is the profile by 4-4 line among Fig. 3;

Fig. 5 is the stereogram according to noise absorber of the present invention under in working order;

Fig. 6 is the profile by 6-6 line among Fig. 5;

Fig. 7 is the plane graph of noise absorber according to the present invention when open mode;

Fig. 8 is the profile by 8-8 line among Fig. 7;

Fig. 9 is an amplification view, is depicted as first hole 151 that can be inserted by hook 161 and the relation between the hook 161;

Figure 10 is for showing the profile according to noise absorber fixing means of the present invention;

Figure 11 shows that in the relation between hole and the hook under the state shown in Figure 10;

Figure 12 is for showing that noise absorber is at the profile through state of living in after the fixation procedure shown in Figure 10;

Figure 13 shows that the relation between the hole and hook under the stationary state shown in Figure 12;

Figure 14 is for showing the profile according to noise absorber method for dismounting of the present invention;

Figure 15 shows that the relation between the hole and hook under the state shown in Figure 14;

Figure 16 is the plane graph according to another embodiment of noise absorber of the present invention;

Figure 17 is the plane graph of noise absorber shown in Figure 16 when open mode;

Figure 18 is the plane graph according to the another embodiment of noise absorber of the present invention; And

Figure 19 is the profile by 19-19 line among Figure 18.

Embodiment

Consult Fig. 1 to Fig. 4, noise absorber according to the present invention comprises housing 1 and a pair of ferrite 21 and 22.Housing 1 is constituted by first housing 11 and second housing 12.The most handy resilient material such as plastics are made first housing 11 and second housing 12.

First housing 11 is provided with that ferrite puts part 110 and cable puts part 111.Being positioned at ferrite in housing 11 inner surfaces puts part 110 and has four clamps 112 that are stuck in 21 4 jiaos of ends of ferrite.Clamp 112 is to outer lug.Cable puts part 111 and is located at ferrite and puts a side of part 110 and close with it.In the drawings, cable puts part 111 and is positioned at the outside as the clamp 112 of cable targeting part.

Second shell 12 that has a similar structures with first housing 11 is provided with that ferrite puts part 120 and cable puts part 121.The ferrite that is positioned at second housing, 12 inner surfaces puts part 120 and has four clamps 122 that are stuck in 22 4 jiaos of ends of ferrite.Clamp 122 is to outer lug.Cable puts part 121 and is located at ferrite and puts a side of part part 120 and close with it.Cable puts part 121 and is positioned at the outside as the clamp 122 of cable targeting part.Put part 121 at cable and be provided with the cable pressing plate 163 that front end is shaped as hook-type.Being located at cable on second housing 12 like this, in the present embodiment puts part 121 and plays the effect that puts cable substantially.

First housing 11 and second housing 12 become one by the

hinge

13 and 14 that they are linked together.By selecting to form the hinge 13 of integral structure and 14 thickness, can make hinge have pliability with first housing 11 and second housing 12.

Be provided with

first hole

151 and 152 hinge 13 opposite side relative with 14 1 sides being set with first housing 11.Be provided with

hook

161 and 162 hinge 13 opposite side relative with 14 1 sides and

first hole

151 and 152 corresponding positions being set with second housing 12.Fixture comprises

first hole

151 and 152 and hook 161 and 162.

First hole

151 and 152 has respectively to projecting inward projection 153 and 154.Hook 161 and 162 inserts in

first hole

151 and 152 and is fixed by projection 153 and 154 respectively.

First hole

151 and 152 comprises the narrow 155 and 156 that narrows down because of projection 153 and 154 respectively, and the dimension D c in narrow 155 and 156 holes is less than hook front end outer dimension D f.Projection 153 and 154 thinner thickness thereby have elasticity.

On this external second housing 12, be provided with second hole 164 and 165 (seeing Fig. 3 and other figure) at the opposite side relative with 14 1 sides and projection 153 and 154 corresponding positions with hinge 13 is set.Second housing 12 is run through in

second hole

164 and 165.

Fixture also comprises second hole 164 and 165.Insert in

first holes

151 and 152 when being fixed by projection 153 and 154 at

hook

161 and 162,

second hole

164 and 165 is in and projection 153 and 154 relative positions.

The opposite side of other second housing 12 in

hinge

13 and 14 is provided with cable pressing plate 163.And first housing 11 and second housing 12 be respectively equipped with spring 171 and 172 (see figure 4)s in their bottom.Although Fig. 1 to the enforcement shown in Figure 4

reed

171 and 172 of being hit by a bullet all be to extend by middle mind-set two ends, also they can be made by two ends and extend to the center.

The ferrite that ferrite 21 is contained in first housing 11 puts in the part 110, puts in the part 120 and ferrite 22 is contained in the ferrite of second housing 12.Ferrite 21 is made the subdivision cylindrical shape, and heart place is provided with groove 211 therein along its length, and the both sides of groove 211 have constituted and have the very contact-making

surface

212 and 213 of high-flatness.The inner surface of groove 211 is semicircle, is provided with four from contact-making

surface

212 and 213 recessed recessed portions 214 at the two ends of axial direction.

In addition, four gear pieces 191 stretch in four clamps 112 of first housing 11, may be stuck on the recessed portion 214 that forms on the ferrite 21.

Ferrite 22 also is made into the subdivision cylindrical shape, and heart place is provided with groove 221 therein along its length, and the inner surface of groove 221 is semicircle, be provided with at the two ends of axial direction four from contact-making

surface

222 and 223 to recessed recessed portion 224.

In addition, four gear pieces 192 stretch in four clamps 122 of second housing 12, may be stuck on the recessed portion 224 that forms on the ferrite 22.

Although in the present embodiment four

recessed portions

214 and 224 and

gear piece

191 and 192 in each all be located at respectively on first housing 11 and second housing 12, they also can be provided with by more quantity or quantity still less.If be provided with, on the diagonal position of first housing 11 and second housing 12, realize the fixedly just more favourable of recessed portion and gear piece at least simultaneously by quantity still less.And they also can be located at the dual-side of Width, rather than the two ends of length direction.

First housing 11 is provided with

semicircular notch

181 and 182 at the two ends of its length direction, and second housing 12 is provided with

semicircular notch

183 and 184 at the two ends of its length direction.When first housing 11 engaged with second housing 12, these semicircular notch 182-184 had constituted with groove 211 and the consecutive through hole of 221 formed cables through.

Fig. 5 is the stereogram of noise absorber according to the present invention when user mode, and Fig. 6 is the profile by 6-6 line among Fig. 5, and Fig. 7 is the plane graph of open mode, and Fig. 8 is the profile by 8-8 line among Fig. 7.

As Fig. 5, shown in Figure 6, will noise absorber 5 according to the present invention be contained in be connected to

connector

41 and 42 or the cable 3 of similar device on the time, be under the state of opening at as shown in Figure 7 first housing 11 and second housing 12, cable 3 is sequentially pierced into cable through 20 by 221 shapes of groove of the groove 211 of ferrite 21 and ferrite 22, and the cable that passes second housing 12 puts part 121 and pierces into cable through 20 again.Then first housing 11 and second housing 12 are coupled together.Although be connected to

connector

41 and 42 on the cable 3, noise absorber 5 can be installed on the cable 3 easily.Connector 41 with 42 with such as personal computer, game device or under the situations that similarly electronic installation links to each other, the installation of noise absorber 5 can be carried out equally easily.

And the length that cable 3 passes cable through 20 is two times that cable passes ferrite length (simple penetration type).This just means that the degree of improvement in performance almost is equivalent to install four degree that simple penetration type noise absorber can reach on same cable.

Because cable puts the inner surface that part 121 is provided in a side of second housing 12, can be contained in the inside of housing 1 after cable 3 coilings, and can not be exposed to the outside of housing 1.So just can prevent reliably that cable 3 is damaged.Although cable 3 has twined once in the present embodiment, the internal diameter by increasing cable through 20 and increase winding number of times that space that cable puts

part

111 and 121 also can make cable 3 more than once.

Be provided with in the present embodiment in addition and comprise

first hole

151 and 152 and the fixture of hook 161 and 162.

First hole

151 and 152 comprises respectively to projecting inward projection 153 and 154.In this fixture,

hook

161 and 162 inserts in

first hole

151 and 152 and by projection 153 and 154 to be fixed.

The cutaway view of Fig. 9 for amplifying, being depicted as can be for first hole 151 of hook 161 insertions and the relation between the hook 161.Although do not illustrate among the figure, has similar relation between first hole 152 that can insert for hook 162 and the hook 162.

First hole

151 and 152 comprises the narrow 155 and 156 that narrows down because of projection 153 and 154 respectively, and narrow 155 and 156 hole dimension Dc are less than

hook

161 and 162 front end outer dimension D f.Projection 153 and 154 has elasticity.

Shown in Figure 10 and 11, when

hook

161 and 162 inserts in

first hole

151 and 152, although the hole dimension Dc of narrow 155 and 156 is less than the outer dimension D f of

hook

161 and 162, utilize the elasticity of projection 153 and 154 that projection 153 and 154 bendings are pressed in

first hole

151 and 152 with the insertion portion with

hook

161 and 162 front ends, and hook 161 and 162 usefulness projections 153 and 154 fixed, shown in Figure 12 and 13.

Because projection 153 and 154 has elasticity,

hook

161 and 162 is after projection 153 and 154 places are fixed, and projection 153 and 154 is returned to its home position.In case projection 153 and 154 is returned to its home position, owing to use the outer dimension D f of the hole dimension Dc of narrow 155 and 156 less than

hook

161 and 162 insertion portions,

hook

161 and 162 just can not throw off with projection 153 and 154 or deviate from from first hole 151 and 152.So just can not because of children move back and forth or similar reason is deviate from

hook

161 and 162 from first hole 151 and 152.Even therefore noise absorber according to the present invention is installed on the game device cable that uses for children, also need not worries and to throw off with cable because of children's behavior according to noise absorber of the present invention.

First hole

151 and 152 is preferably made rounded shapes (seeing Fig. 9 and other figure) for

hook

161 and 162 edges 157 and 158 that insert opening.To insert edge of opening 157 and 158 and make the fillet form, and insert first holes 151 and just can not be stuck at 157 and 158 places in 152 o'clock, they can be inserted smoothly at the edge at hook 161 and 162.Inserting edge of opening 157 and 158 can also beveling and reach similar effect.

Hook

161 and 162 end edge should be made has the shaped form end edge that radius is R (seeing Figure 13 and other figure).End edge is made the

hook

161 and 162 of shaped form, and in the time of in being pressed into

first hole

151 and 152, suffered resistance reduces when end edge is made linear pattern greatly, helps the operation that press-fits of hook like this.And because the least significant end of curve end edge is to be stuck in projection 153 and 154 places with high reliability,

hook

161 and 162 all can be by slippage in

first hole

151 and 152.

In the present embodiment, fixture also comprises second hole 164 and 165.Insert in

first holes

151 and 152 when being fixed by projection 153 and 154 at

hook

161 and 162,

second hole

164 and 165 is in and projection 153 and 154 relative positions.When being pulled down on by cable 3, noise absorber could understand the meaning that

second hole

164 and 165 are set.

How to be described in detail below noise absorber by pulling down on the cable 3.Carry out dismantlement work and need extracting tool 6.For example, extracting tool 6 can be flat mouthful screwdriver.

Before beginning dismounting, noise absorber is contained on the cable 3, and hook 161 and 162 is inserted in

first hole

151 and 152 and is blocked by projection 153 and 154, shown in Figure 12 and 13.

The front end of extracting tool 6 is inserted in second hole 164 and 165.Because the projection 153 and 154 of

first hole

151 and 152 has elasticity.Therefore shown in Figure 14 and 15, can utilize extracting tool 6 to projection 153 and 154 apply power F make projection 153 with 154 they with direction that hook 161 and 162 is thrown off mutually on bend, the hole dimension Dc that increases narrow equals the outer dimension D f of

hook

161 and 162 up to this size.Thereby utilize like this extracting tool 6 can with

hook

161 and 162 and projection 153 and 154 throw off and to make noise absorber return to the state shown in Figure 10 and 11.As shown in Figure 7 first housing 11 and second housing 12 are opened then, in the cable through 20 that cable is made up of groove 211 and groove 221 and the cable of second housing 12 put in the part 121 and take out.

As mentioned above, can utilize extracting tool 6 to force to pull down according to noise absorber of the present invention from cable 3.And as front narration more earlier, according to noise absorber of the present invention can not because of children move back and forth or similar former thereby throw off with cable.

Even be connected to

connector

41 and 42 on the cable 3, also can utilize extracting tool 6 noise absorber according to the present invention to be forced to pull down from cable 3 with similar method.With 42 when being connected, also can not hinder the dismounting of noise absorber at connector 41 such as personal computer, game device or like.

Do not need to be provided with simultaneously cable according to noise absorber of the present invention and put part and fixture.Only need among them.

In addition, in the present embodiment, the cable of second housing 12 puts part 121 places and is provided with cable pressing plate 163.The front end of cable pressing plate 163 is made hook-type.This structure can be guaranteed that cable 3 can not put part 121 with cable when noise absorber 5 is contained on the cable 3 and leave.So just help the winding of cable 3.

First housing 11 is provided with spring leaf 171, the second housings 12 at basal part and is provided with spring leaf 172 in its bottom.When cable 3 being placed the groove 211 of ferrite 21 or the groove 221 of ferrite 22, and when utilizing

hinge

13 and 14 first housing 11 and second housing 12 to be done relatively rotate and make

hook

161 and 162 to be fixed in

first hole

151 and 152 as rotating shaft, in this structure, can make the contact-making surface (212 of a pair of

ferrite

21 and 22 owing to the elastic reaction of spring leaf 171 and 172,213) and (222,223) contact fully each other between, in fact formed the magnetic screen path reducing along the magnetic resistance of

ferrite

21 and 22 magnetic circuits that distribute, thereby the noise absorption effect that can obtain to give prominence to.

The inner surface of first housing, 11 sides has the gear piece 191 of outside protrusion, and they may be stuck in the recessed portion 214 on the ferrite 21.The inner surface of second housing, 12 sides also has the gear piece 192 of outside protrusion, and they may be stuck in the recessed portion 224 of ferrite 22.In this structure, ferrite 21 is being embedded in first housing 11, when embedding ferrite 22 in second housing 12, so

gear piece

191 and 192 enters second housing 12 because of its elasticity and pliability bend and ferrite 21 guiding can be entered first housing 11 with ferrite 22 guiding.Subsequently, when ferrite 21 embedded in first housing 11 fully, gear piece 191 was stuck on the recessed portion 214 to its original-shape because of its elastic recovery.When ferrite 22 embedded in second housing 12 fully, gear piece 192 was stuck on the recessed portion 224 to its original-shape because of its elastic recovery.Because

ferrite

21 and 22 is from by the contact-making surface one side pressurized that constitutes upper surface, can prevent that their from occurring rotating or shake and come off away.

Figure 16 is the plane graph according to another embodiment of noise absorber of the present invention.In the drawings, used identical sequence number to mark to the part identical, and omitted explanation them with part among Fig. 1 to Figure 13.In the present embodiment, on first housing 11 and second housing 12, respectively be provided with two cables and put part.Promptly be provided with two cables and put

part

111 and 111, be provided with two cables in the both sides that the ferrite of second housing 12 puts part 120 and put

part

121 and 121 in the both sides that the ferrite of first housing 11 puts part 110.Put

part

121 and 121 places respectively are provided with a cable pressing plate 163 at each cable.

In structure shown in Figure 16, the winding number of times that can increase cable 3 can obtain significant more noise absorption performance as shown in figure 17 like this.

Figure 18 is the plane graph according to the another embodiment of noise absorber of the present invention, and Figure 19 is the profile along 19-19 line intercepting among Figure 18.In these figure, used identical sequence number to mark, and omitted explanation them to the part identical with part among Fig. 1 to Figure 15.Cable is not set in the embodiment shown in Figure 18 and 19 puts part and only be provided with fixture, so can reach Fig. 1 yet to effect same embodiment illustrated in fig. 15.

In sum, can realize following superiority according to the present invention.

(1) provides a kind of and can make things convenient for the noise absorber that promptly is contained on the cable.

(2) provide a kind of noise absorber that demonstrates superior noise absorption performance.

(3) provide a kind of cable that can prevent to be damaged and to have the noise absorber of high reliability.

(4) provide a kind of can not moving back and forth or similar former thereby noise absorber that come off from cable because of children.

Although according to a preferred embodiment of the invention and consult accompanying drawing the present invention has been done detailed narration and explanation, the present invention is not limited to these examples, one of ordinary skill in the art is appreciated that, under the prerequisite that does not depart from spirit of the present invention, scope and argumentation, can make various changes in the form and details to embodiments of the invention.

Claims

1, a kind of noise absorber comprises:

By the housing that first housing and second shell combination constitute, described first housing and described second housing respectively carry ferrite and put part, and each described ferrite puts the inner surface that part is located at described first housing or described second housing; With

The a pair of described ferrite that is separately positioned on described first housing and described second housing puts the ferrite in the part, forms cable through after the described a pair of ferrite combination between it,

Wherein, described first housing is connected to each other with one or more hinges at one end margin place with described second housing is in the same place, edge at the other end relative with the described edge of described this end is provided with fixture, and described fixture comprises first hole and hook

It is characterized in that:

Described first hole comprises and inwardly protruding out and the rubber-like projection, and comprises the narrow that narrows down because of projection;

Described hook inserts in described first hole by described narrow, so that described hook is stuck at described projection place; With

The external dimensions of the insertion portion of described hook is set to the hole dimension greater than described narrow.

2, noise absorber as claimed in claim 1 is characterized in that:

Described fixture also comprises second hole, and the position in described second hole is set to that to insert when blocking in described first hole and by described projection described second hole relative with described projection when described hook.

3, noise absorber as claimed in claim 1 is characterized in that, also comprises:

Be guided through the cable of described cable through.

4, noise absorber as claimed in claim 2 is characterized in that, also comprises:

Be guided through the cable of described cable through.